
Energy Calculations in Phase Changes
Interactive Video
•
Physics, Chemistry, Science
•
9th - 10th Grade
•
Practice Problem
•
Hard
Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What equation is used to calculate the energy required to change the temperature of a substance?
Q = m * c * ΔT
Q = P * V
Q = m * g * h
Q = m * L
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why can't you use a single Q = m * c * ΔT calculation to find the energy required to heat water from -10°C to 120°C?
Because the mass of water changes
Because the temperature change is too large
Because water is a poor conductor of heat
Because there are phase changes involved
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step in solving the problem of heating water from -10°C to 120°C?
Boiling the water
Melting the ice
Heating from -10°C to 0°C
Heating from 0°C to 100°C
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which specific heat value is used when heating ice from -10°C to 0°C?
3.00 J/g°C
2.09 J/g°C
4.18 J/g°C
1.00 J/g°C
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the heat of fusion for water?
334 J/g
2260 J/g
209 J/g
418 J/g
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How much energy is required to melt 100g of ice at 0°C?
33,400 J
41,800 J
226,000 J
4,180 J
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the specific heat of liquid water?
1.00 J/g°C
4.18 J/g°C
3.00 J/g°C
2.09 J/g°C
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